No to be fair I do see what he's saying. I see a major difference between the more expensive models and the cheaper ones. The cheaper (usually default) ones make mistakes all the damn time. You can be as clear as day with them and they simply don't have the context window or specs to make accurate, well reasoned desicions and it is a bit like having a terrible junior work alongside you, fresh out of university.

Emphasis on the "terrible" part of the junior.

The cheaper models can't be taught or improved due to their inherit limitations, which makes it a huge pain to even try with even the simplest of tasks. Perpetually, no matter your instruction file(s).